A209839 - OEIS

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A209839 as a simple table

n	a(n)
1	1
2	3
3	7
4	13
5	15
6	21
7	25
8	27
9	31
10	37
11	43
12	45
13	51
14	55
15	57
16	63
17	67
18	73
19	81
20	85
21	87
22	91
23	93
24	97
25	111
26	115
27	121
28	123
29	133
30	135
31	141
32	147
33	151
34	157
35	163
36	165
37	175
38	177
39	181
40	183
41	195
42	207
43	211
44	213
45	217
46	223
47	225
48	235
49	241
50	247
51	253
52	1330
53	1383
54	4179
55	4180
56	4181
57	5243
58	12985
59	48506
60	87161
61	211750

[1,3,7,13,15,21,25,27,31,37,43,45,51,55,57,63,67, 73,81,85,87,91,93,97,111,115,121,123,133,135,141, 147,151,157,163,165,175,177,181,183,195,207,211, 213,217,223,225,235,241,247,253,1330,1383,4179, 4180,4181,5243,12985,48506,87161,211750]